Printronix P9000 Series - Manual (Page 116)

Programming 6-18
Character Pitch 12 CPI
ASCII Hex Decimal
P-Series N/A N/A N/A
Serial ESC M 1B 4D 27 77
ESC : 1B 3A 27 58
Purpose Sets character pitch to 12 cpi.
Comment Control Code ESC X can also be used to select a character pitch of 12 cpi.
Refer to Print Mode/Pitch Selection on page 6-58.